US2917670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic generator and ignition system
Assignee: Individual
•
Filing: 1958-06-17
•
Granted: 1959-12-15
•
Expires: 1978-06-17
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Crownover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:47
CPC Classifications
F; F23; F23Q; F23Q2/00; F23Q2/28; F23Q2/285; F23Q2/287; F02; F02P; F02P3/00; F02P3/12; F23Q3/00; F23Q3/002; H; H02; H02N; H02N1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2248574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |